Removal and recovery of compressed CO2 from flue gas by a novel thermal swing chemisorption process

Ki Bong Lee, S. Sircar

Research output: Contribution to journalArticle

64 Citations (Scopus)


A synopsis of the published literature on removal of CO2 from a flue gas is given. A novel thermal swing chemisorption (TSC) process concept is proposed for removal and recovery of compressed CO2 from a flue gas without precompression, predrying, or precooling. The process uses Na 2O promoted alumina as a reversible CO2 selective chemisorbent in conjunction with the principles of rapid thermal swing adsorption for direct production of compressed CO2 from a flue gas. Several complementary process steps are used in the design to compress the product CO2 and to achieve high CO2 recovery and sorbent capacity utilization. Judicious steam purge steps are used for highly efficient sorbent regeneration and to minimize the steam requirement. The CO2 chemisorption characteristics of the sorbent are reviewed and a model simulation of the TSC process performance is reported.

Original languageEnglish
Pages (from-to)2293-2302
Number of pages10
JournalAICHE Journal
Issue number9
Publication statusPublished - 2008 Sep 1
Externally publishedYes



  • Carbon dioxide
  • Chemisorption
  • Compression
  • Flue gas
  • Promoted alumina
  • Removal

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Biotechnology
  • Environmental Engineering
  • Mechanical Engineering
  • Polymers and Plastics

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